Seasonal variability in the isotopic niche of the invasive channel catfish Ictalurus punctatus in Japan
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F24%3A43908100" target="_blank" >RIV/60076658:12520/24:43908100 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/s10750-023-05404-2" target="_blank" >https://doi.org/10.1007/s10750-023-05404-2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10750-023-05404-2" target="_blank" >10.1007/s10750-023-05404-2</a>
Alternative languages
Result language
angličtina
Original language name
Seasonal variability in the isotopic niche of the invasive channel catfish Ictalurus punctatus in Japan
Original language description
The global threat posed by non-native species to biodiversity and freshwater ecosystems necessitates understanding their ecological impacts. The invasive North American channel catfish Ictalurus punctatus (Rafinesque, 1818) is such a case, having been shown to not only have considerable impacts to native biodiversity, but also to expand its range. Several decades ago, I. punctatus was introduced to Lake Kasumigaura, Japan. This study investigates the seasonal dynamics of I. punctatus' trophic niche over three consecutive years. Stable isotopes analyses of carbon (delta C-13) and nitrogen (delta N-15) were utilized to assess isotopic niche variation and feeding habitat. Results demonstrate ontogenetic variations in I. punctatus' trophic position and feeding habitat, influenced by both season and year. Ictalurus punctatus exhibited a wider isotopic niche and greater interindividual dispersion during spring and summer compared to autumn and winter. While the occupied isotopic niche space remained stable across years, significant seasonal differences were observed in 2 out of 3 years. These seasonal differences underscore the high trophic plasticity of I. punctatus, facilitating its ability to exploit a diverse spectrum of resources. This research advances our understanding of this species' trophic traits and invasiveness, emphasizing the significance of considering seasonal variations in the ecological impacts of invasive fish species.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Hydrobiologia
ISSN
0018-8158
e-ISSN
1573-5117
Volume of the periodical
851
Issue of the periodical within the volume
6
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
13
Pages from-to
1551-1563
UT code for WoS article
001099922000001
EID of the result in the Scopus database
2-s2.0-85175818709